How long is the flight from Sydney to Region of Siem Reap?

Airlines like Singapore Airlines and VietJet Air fly from Sydney to Region of Siem Reap in about 18h 45m. The time it takes to get you to your destination can typically vary by up to 15h 15m. There are 7229 km between Sydney and Region of Siem Reap. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in Region of Siem Reap ranges from 0.0 - 260.0 inches per month. September is typically the wettest month, when rainfall can reach 260.0 mm. January is typically the driest time to visit Region of Siem Reap when rainfall is around 0.0 mm.

If weather is an important factor for your trip to Region of Siem Reap, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 24.0 C).

What is the cheapest time of day to fly from SYD to SI?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Sydney to Region of Siem Reap as you normally would.

What airport do you fly from for flights from Sydney to Siem Reap?

For a flight from Sydney to Siem Reap, you will be flying from Kingsford Smith. Sydney Kingsford Smith (SYD) is just 7.5 km from the centre of the city.

Can I find deals for flights from Sydney to Siem Reap that include hotel bookings?

Yes. In addition to deals on Sydney to Siem Reap flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Sydney to Siem Reap?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to Siem Reap.

Can I find deals for business class flights from Sydney to Siem Reap?

Yes. Cheapflights offers flight deals from Sydney to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$431+ Cheap Flights from Sydney to Siem Reap

Cheap flight deals from Sydney to Siem Reap

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Sydney to Siem Reap
Explore the most affordable flight options available from Sydney to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 September 2026.

Mon 9/1111:50 -

1 stop12h 40m

Thu 3/1218:40 -

1 stop11h 10m

Deal found 16/9$847

Sun 1/1120:05 -

2 stops41h 10m

Sun 8/1118:40 -

1 stop12h 50m

Deal found 17/9$892

Mon 5/1021:35 -

2 stops21h 15m

Tue 20/1015:35 -

2 stops17h 10m

Deal found 19/9$975

Sun 1/1119:10 -

1 stop18h 45m

Sun 8/1110:45 -

1 stop16h 55m

Deal found 17/9$1,002

Sat 14/1111:50 -

1 stop12h 40m

Mon 23/1118:40 -

1 stop11h 10m

Deal found 17/9$1,077

Wed 25/1117:10 -

2 stops20h 05m

Tue 15/1214:40 -

1 stop16h 50m

Deal found 18/9$1,079

Sun 22/1111:50 -

1 stop12h 40m

Mon 23/1118:40 -

1 stop11h 10m

Deal found 15/9$1,091

Find flight deals from Sydney to Siem Reap

Round-trip from	$847
One-way from	$431
Popular in	December
Cheapest in	June
Average price	$1,345

Vietnam Airlines
9/11-3/12
2 total stops
23h 50m total
Sydney to Siem Reap

Search Deals

8/11-31/12
2 total stops
23h 55m total
Sydney to Siem Reap

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($349 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease ($87 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneySiem Reap

SYD Sydney Kingsford Smith - SAI Siem Reap–Angkor Intl

SYDSAI

Sydney Kingsford Smith

Sun 8/11

13:25-09:20

2 stops23h 55m

Siem Reap–Angkor Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

$431

SydneySiem Reap

SYD Sydney Kingsford Smith - SAI Siem Reap–Angkor Intl

SYDSAI

Sydney Kingsford Smith

Fri 20/11

12:05-15:00

2 stops30h 55m

Siem Reap–Angkor Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

$501

Fastest return journey

SydneySiem Reap

SYD Sydney Kingsford Smith - SAI Siem Reap–Angkor Intl

SYDSAI

Sydney Kingsford Smith

Tue 6/10

11:15-18:20

1 stop11h 05m

Siem Reap–Angkor Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

$504

SydneySiem Reap

SYD Sydney Kingsford Smith - SAI Siem Reap–Angkor Intl

SYDSAI

Sydney Kingsford Smith

Sun 22/11

20:05-18:05

2 stops50h 00m

Siem Reap–Angkor Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

$543

SydneySiem Reap

SYD Sydney Kingsford Smith - SAI Siem Reap–Angkor Intl

SYDSAI

Sydney Kingsford Smith

Tue 17/11

13:25-09:55

1 stop24h 30m

Siem Reap–Angkor Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

$607

SydneySiem Reap

SYD Sydney Kingsford Smith - SAI Siem Reap–Angkor Intl

SYDSAI

Sydney Kingsford Smith

Sun 1/11

19:10-09:55

1 stop18h 45m

Siem Reap–Angkor Intl

Sun 8/11

10:45-07:40

1 stop16h 55m

$1,002

SydneySiem Reap

SYD Sydney Kingsford Smith - SAI Siem Reap–Angkor Intl

SYDSAI

Sydney Kingsford Smith

Sun 15/11

11:50-16:10

3 stops32h 20m

Siem Reap–Angkor Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

$1,058

SydneySiem Reap

SYD Sydney Kingsford Smith - SAI Siem Reap–Angkor Intl

SYDSAI

Sydney Kingsford Smith

Mon 5/10

21:50-14:50

1 stop21h 00m

Siem Reap–Angkor Intl

Tue 20/10

15:35-12:45

2 stops17h 10m

$1,076

SydneySiem Reap

SYD Sydney Kingsford Smith - SAI Siem Reap–Angkor Intl

SYDSAI

Sydney Kingsford Smith

Sat 14/11

15:15-20:30

2 stops33h 15m

Siem Reap–Angkor Intl

Mon 23/11

18:40-20:20

2 stops21h 40m

$1,097

SydneySiem Reap

SYD Sydney Kingsford Smith - SAI Siem Reap–Angkor Intl

SYDSAI

Sydney Kingsford Smith

Sun 1/11

12:05-18:05

2 stops34h 00m

Siem Reap–Angkor Intl

Sun 8/11

19:05-10:00

2 stops58h 55m

$1,127

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 17 resultsSorted by cheapest first

Best time to book a flight from Sydney to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Sydney with our price prediction graph.

SYD-SAI

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sydney to Siem Reap

SYD-KHSI

SYD-SAI

How much does it cost for a return flight from Sydney to Region of Siem Reap?

Airfare is below average for this route at the moment.

Sydney to Region of Siem Reap flights typically cost between $935 and $1,169 in November.
The cheapest return price found within the last 5 days was $847 on Vietnam Airlines (9 Nov–3 Dec).

Reviews of airlines servicing Siem Reap

Get a feel of what it's like to fly with Singapore Airlines and Vietnam Airlines from Sydney to Siem Reap by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.2

Very Good

1,606 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Singapore Airlines

8.2

Very Good

1,606 reviews

Singapore Airlines

8.2

Very Good

1,606 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Vietnam Airlines

7.7

Good

288 reviews

Singapore Airlines

8.2

Very Good

1,606 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

Related info for your journey

What airport do you fly from for flights from Sydney to Siem Reap?
For a flight from Sydney to Siem Reap, you will be flying from Kingsford Smith. Sydney Kingsford Smith (SYD) is just 7.5 km from the centre of the city.
How long is the flight from Sydney to Region of Siem Reap?
Airlines like Singapore Airlines and VietJet Air fly from Sydney to Region of Siem Reap in about 18h 45m. The time it takes to get you to your destination can typically vary by up to 15h 15m. There are 7229 km between Sydney and Region of Siem Reap. Both multi-stop and direct flights can be found to your destination and back.
Can I find deals for flights from Sydney to Siem Reap that include hotel bookings?
Yes. In addition to deals on Sydney to Siem Reap flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Sydney to Siem Reap?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to Siem Reap.
Can I find deals for business class flights from Sydney to Siem Reap?
Yes. Cheapflights offers flight deals from Sydney to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

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Flights by cabin class

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Popular flights

Alternative routes for Sydney to Siem Reap

Sydney to Siem Reap flights

Coolangatta to Siem Reap flights

Top 2 airlines flying from Sydney to Siem Reap

Airline	Cheapest	Average	Flexibility	On-time
Vietnam Airlines	Cheapest$812	Average$1,086	FlexibilityNo cancel fee	On-time81%	Search Vietnam Airlines flights
Singapore Airlines	Cheapest$836	Average$1,126	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights

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How does Cheapflights help users find flights from Sydney to Siem Reap?

When you search for this flight from Sydney to Siem Reap, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Sydney to Siem Reap?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Siem Reap from Sydney.

Can Cheapflights find flights from Sydney to Siem Reap with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Sydney to Siem Reap, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Sydney to Siem Reap become cheaper?

Of course! You can now track prices for flights from Sydney to Siem Reap and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from Sydney to Siem Reap from $431

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Sydney to Siem Reap

Cheapest flights from Sydney to Siem ReapExplore the most affordable flight options available from Sydney to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 September 2026.

Explore the most affordable flight options available from Sydney to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 September 2026.

Best flights from Sydney to Siem ReapDiscover carefully curated flight deals from Sydney to Siem Reap that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.

Discover carefully curated flight deals from Sydney to Siem Reap that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.

Direct flights from Sydney to Siem ReapExplore direct flight options from Sydney to Siem Reap based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 September 2026.

Explore direct flight options from Sydney to Siem Reap based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 September 2026.

Last-minute flights from Sydney to Siem ReapDiscover last-minute flight deals from Sydney to Siem Reap. Data last updated 20 September 2026 and is based on user searches.

Discover last-minute flight deals from Sydney to Siem Reap. Data last updated 20 September 2026 and is based on user searches.

One-way flights from Sydney to Siem ReapSearch for one-way flight options from Sydney to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 20 September 2026.

Search for one-way flight options from Sydney to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 20 September 2026.

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Popular in

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Use the filters below to find and compare flights from Sydney to Siem Reap that are best for you.

Best time to book a flight from Sydney to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Sydney with our price prediction graph.

Cheapflights Insights

How much does it cost for a return flight from Sydney to Region of Siem Reap?

Airfare is below average for this route at the moment.

Sydney to Region of Siem Reap flights typically cost between $935 and $1,169 in November.The cheapest return price found within the last 5 days was $847 on Vietnam Airlines (9 Nov–3 Dec).

Reviews of airlines servicing Siem Reap

Get a feel of what it's like to fly with Singapore Airlines and Vietnam Airlines from Sydney to Siem Reap by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Sydney to Siem Reap?

How long is the flight from Sydney to Region of Siem Reap?

Can I find deals for flights from Sydney to Siem Reap that include hotel bookings?

How can I find direct flights from Sydney to Siem Reap?

Can I find deals for business class flights from Sydney to Siem Reap?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Sydney to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Siem Reap by adding a car hire and/or hotel booking to your travel itinerary.

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Book a non-stop flight to one of these other cities located in .

Search flights from Sydney to Siem Reap by cabin class

Find flights from Sydney to Siem Reap, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Sydney and Siem Reap flights

Browse other Sydney and Siem Reap flight options. Last updated on 20 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top 2 airlines flying from Sydney to Siem Reap

Fly with Cheapflights

How does Cheapflights help users find flights from Sydney to Siem Reap?

Why should you use Cheapflights to find cheap flight tickets from Sydney to Siem Reap?

Can Cheapflights find flights from Sydney to Siem Reap with no change fees?

Can Cheapflights notify me if prices for flights from Sydney to Siem Reap become cheaper?

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Travel Smart

Cheapest flights from Sydney to Siem Reap
Explore the most affordable flight options available from Sydney to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 September 2026.

Best flights from Sydney to Siem Reap
Discover carefully curated flight deals from Sydney to Siem Reap that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 September 2026.

Direct flights from Sydney to Siem Reap
Explore direct flight options from Sydney to Siem Reap based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 September 2026.

Last-minute flights from Sydney to Siem Reap
Discover last-minute flight deals from Sydney to Siem Reap. Data last updated 20 September 2026 and is based on user searches.

One-way flights from Sydney to Siem Reap
Search for one-way flight options from Sydney to Siem Reap. Find affordable one-way fares based on user searches. Data last updated 20 September 2026.

Sydney to Region of Siem Reap flights typically cost between $935 and $1,169 in November.
The cheapest return price found within the last 5 days was $847 on Vietnam Airlines (9 Nov–3 Dec).